Sheet-delivery apparatus for printing-machines



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J. T.'HAWKINS.

- SHEETDELIVERY APPARATUS FOR PRINTING MACHINES. No. 333,071. Patented Dec. 22, 1885.

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'2S'htSht2.' J. T. HAWKINS. 66 SHEET, DELIVERY APPARATUS FOR PRINTING MAUHINES. No. 333,071,

\ Patented Dec. 22,1885.

itnW' UNITED STATES PATENT OFFICE.

' JOHN T. HAWKINS, OF TAUNTON, MASSACHUSETTS.

SHEET-DELIVERY APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 333,071, dated December 22, 1885.

Application filed June 22, 1885. Serial No. 169,353. (No model.)

To all whom it may concern.-

Be it known that I, JOHN T. HAWKINS, of Taunton, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Sheet-Delivery Apparatus for Printing-Machines, which invention or improvements are fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is to automatically deliver the sheets from the top of an oscillating printing-press cylinder with the lastprinted side up, upon a delivery-board without the use of an oscillating fly.

The invention consists of the parts and combinations of parts hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure lis a longitudinal, vertical section, and Fig. 2 a transverse vertical section seen from the righthand end of Fig. 1, of so much ofa cylinder printing-press as is necessary to illustrate the invention, said press having been more fully illustrated in my application bearing the Scrial No. 124,297, filed March 15, 1884.. Fig. 3 is an enlarged elevation of the principal parts operating the delivery. Fig. 4is a sectional View of said parts in plan. Fig. 5

shows a portion of the periphery of the cylinder with the sheet upon it and the means employed to support the tail of the sheet slightly away from contact with the cylinder.

Fig. 6 shows in three views the sheet-supports fully described in the abovenamed application, Serial N 0. 124,297.

In said figures the several parts are indicated by letters, as follows:

A are the main frames.

Bis the main cross stay or girder immediately under the cylinder.

0 is the impression-cylinder.

D is the type-bed.

B are brackets carrying two rollers for the support of the type-bed in its central parts.

B are rollers upon which the central rollerways of the bed run.

B are rollers running on studs in the frames A, upon which the outer roller-ways of the bed run.

R is a toothed rack secured to the bed D.

R is a toothed gear secured to the cylinder 0, engaging rack R.

R is a toothed pinion carried on the shaft R also journaled in the frames A and engaging the gear R. Upon the shaft R a hand-crank may be placed, by means of which the cylinder 0, and with it the bed D, may be operated in both directions. There are stops for limiting the motion of the bed D at the end of the stroke. (Not shown.)

E is a platform for the paper, and E the feed-board, hinged at E in the brackets E E are a pair of eccentric cams secured to a shaft, E journaled in the frames A, upon which the free end of the feed-board rests.

E is a shaft journaled in the frames A, to which are secured thesheet guides or gages E.

F is a rock-shaft journaled in the frames A.

Upon shaft F are secured a pair of levers, FK

Pivoted in the long arms of levers F by a stop-joint, F is a bar, F carrying a series of fingers, F resembling the ordinary oscillating fly. The short arm of lever F carries a stud, F.

F is a bell-crank lever oscillating upon a stud, F, fixed in one of the frames A. Pivoted to the horizontal arm of bell-crank F" is a weighted hook-catch, F engaging at the proper times the stud F*. To the vertical arm of bell-crank lever F is articulated a connecting-rod, F, whose other end is similarly articulated to the vertical arm of another bellcrank, F which also oscillates upon a stud,

F, fixed in one of the frames A. The hori- I is a sheetstop made adjustableupon said board, if desired, and slotted at the proper places to allow the fingers ,F to pass downward through such slots.

vThe cylinder 0 runs loosely upon eccentric journals formed on the rock-shaft O.

O are eccentrical bushes or boxes in which the rock shaft 0 is journaled, made eccen- IOO rically for the purpose of adjusting the imiression, as shown in the application filed y me December 26, 1883, bearing the Serial I0. 115,603. Secured to the rock-shaft O is double-armed lever, L. To a stud, L caried in the short arm of lever L, is connected i connecting-rod, L whose other end is coniected to a stud carried in a lever, L which atter is secured to the rock-shaft E. To a tud, L carried in the long arm of lever L, 3 articulated a strap or belt, R, for operating he fountain roller. (Not necessary to be urther shown in illustrating this invention.) .he small double-pointed staple-like piecesss ,Fig. 6,are stuck in the tympan-sheet, usually overing the blanket or packing of the cylinder, as to bejust in position to have the tail of the heet rest upon them, and which have elevaed the tail of the sheet from the cylinder, as hown in Fig. 5. The pointed legs of the beet-supports s are made to pass between the ympan-sheet and packing or blanket, and he pressure of the former on the latter seiures them in place, as fully described in the irst above-mentioned application. A series )f stripperfingers, s, are secured to a staionary rod, sflwhich in turn is secured to the :nds of the frames A. The points of these fingers are to be so placed close to the cylinder 3 that when the cylinderis in position to comnence to deliver the sheet,the tail end, as iupported on the sheet-supports s, will enter ipon them and be stripped by them from $110 cylinder as it rotates on the non-printing stroke.

S are a series of pressure-rollers for holding the sheet in contact with the cylinders surface during the retrograde or non-printing stroke. With the parts in the 'position shown the fingers F will lie upon the bank of delivered sheets upon the receiving-board I. During the printing-stroke the cam F through the connecting parts already described, allows the weighted hook-catch F to'drop, and thus raise the fingers F to the position shown in dotted lines in Fig. 1, so that the next sheet may pass down under them and upon the receiving -board I or the pile of sheets thereon, the stop -roller 1 on the bracket 1, which may be made adj ustable, having meanwhile passed clear of the lower end of the weighted hook-catch F without striking it. The fingers F will therefore remain in this position during so much of the retrograde revolution of the cylinder as suffices to carry the sheet down until thetail comes in contact with the stop I, when the stoproller 1 is so located-the weight of the hook F being now at its lowest positionthat it engages the said hook at the moment that the tail of the sheet reaches the stop I, tripping chine in which the sheet is delivered from the cylinder tail first, a sheet-delivery apparatus consisting of a series of sheet-supports, as s, a series of pressure-rollers, as S,

a series of stripperfingers, as s, an inclined receiving-board, as I and sheet-stops, as 1*, substantially as and for the purposes set forth.

2. In a printing-press, in combination with its sheet-delivery apparatus, a sheet flattening and controlling apparatus consisting of a series of fingers, as F, projecting from a bar, as F", pivoted by a stop-joint to two levers, as F, said levers being in turn pivoted to the machine and operated substarr tially as described, whereby said fingers are caused to lie upon the pile of sheets on the receiving-board whether there may be a small or a large pile of sheets upon the board, substantially as and for the purposes set forth.

3. In an oscillatingcylinder printing-press in which the sheets are delivered from the cylinder tail first, the combination of parts for automatically flattening out the sheets upon the receiving-board, consisting of a series of fingers, as F, secured to a bar, as F, pivoted by a stop-joint to two levers, as F, secured to a rock-shaft, as F, a stud upon the free end of one of said levers engaging a weighted hook, as F, a stop-roller, as 1, secured to the type-bed and engaging the lower part of said weighted hook, pivoted to the horizontal arm of a bell-crank lever, as F, oscillating upon a stud, as F, a connectingrod, as F, pivoted at one end to the vertical arm of said be1l-crank lever and at the other end to the vertical arm of another bell-crank lever, as F upon a stud, as F, secured to the frame or other fixed part of the machine, and a roller, as F", upon the horizontal arm of said bell-crank, engaging asuitably-formed cam, as F, secured to said oscillating cylinder,whereby the sheets are automatically flattened out at the proper times upon a receiving-board, as 1 substantially as set forth.

JOHN T. HAWKINS. lVitnesses:

ELISHA T. JACKSON, J. F. HALEY. 

